body{
    min-width: 1100px;
}
.line{
    width: 753px;
    height: 1px;
    background-color: #777;
    margin-top: 5px;
}
form{
    width: 553px;
    margin: 0 auto;
}
form>p{
    margin-top: 20px;
    font-size: 14px;
    line-height: 30px;
}
input{
    border: 1px solid skyblue;
    line-height: 30px;
    width: 300px;
}

.a1{
    margin-left: 30px;
}

